Schaller M6 135 Guitar Tuning Machine
The Schaller M6 135 guitar tuning machine offers precision engineering and smooth operation with an improved 1:18 gear ratio. Designed with high-precision CNC-machined components and surface finishes, the self-locking drive ensures consistent, sensitive, and stable tuning.
Crafted with premium brass string posts precisely fitted into the housing, these tuners deliver maximum tuning stability and long-lasting wear resistance. The innovative stepped M6 flanged washer centers the string post reliably through the banjonut, eliminating tilting torque and removing stress from both the post and rear mounting screws.
Featuring permanent lubrication with specialized grease for maintenance-free performance, the M6 135 shares identical installation dimensions with its predecessor model, allowing seamless drop-in replacement without instrument modifications.
| Brand | Schaller |
| Product Type | Guitar Tuning Machine |
| Series | M6 Series |
| Model | M6 135 |
| Gear Ratio | 1:18 |
| Post Material | Brass |
| Button Bore Diameter | 0.17 in (4.2 mm) with 0.14 in (3.6 mm) drive flat |
| Weight with Button per Unit (Small / Large) | Metal: 1.27 oz / 1.34 oz (36 g / 38 g); Perloid: 1.06 oz / 1.09 oz (30 g / 31 g); Ebony: 1.06 oz / 1.09 oz (30 g / 31 g) including banjonut |
| Mounting Screws Included | M2.2 x 9.5 mm (0.37 in) |
| Flanged Washer Diameter | 0.39 in (10 mm) |
| Product Weight | 0.79 lb |


















